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Open data
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Basic information
Entry | Database: PDB / ID: 2j0o | ||||||
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Title | Shigella Flexneri IpaD | ||||||
![]() | INVASIN IPAD | ||||||
![]() | CELL INVASION / SHIGELLA FLEXNERI / TYPE III SECRETION / IPAD / T3SS / PLASMID / INVASIN / VIRULENCE | ||||||
Function / homology | ![]() effector-mediated activation of programmed cell death in host / extracellular region Similarity search - Function | ||||||
Biological species | ![]() | ||||||
Method | ![]() ![]() ![]() | ||||||
![]() | Johnson, S. / Roversi, P. / Lea, S.M. | ||||||
![]() | ![]() Title: Self-chaperoning of the type III secretion system needle tip proteins IpaD and BipD. Authors: Steven Johnson / Pietro Roversi / Marianela Espina / Andrew Olive / Janet E Deane / Susan Birket / Terry Field / William D Picking / Ariel J Blocker / Edouard E Galyov / Wendy L Picking / Susan M Lea / ![]() Abstract: Bacteria expressing type III secretion systems (T3SS) have been responsible for the deaths of millions worldwide, acting as key virulence elements in diseases ranging from plague to typhoid fever. ...Bacteria expressing type III secretion systems (T3SS) have been responsible for the deaths of millions worldwide, acting as key virulence elements in diseases ranging from plague to typhoid fever. The T3SS is composed of a basal body, which traverses both bacterial membranes, and an external needle through which effector proteins are secreted. We report multiple crystal structures of two proteins that sit at the tip of the needle and are essential for virulence: IpaD from Shigella flexneri and BipD from Burkholderia pseudomallei. The structures reveal that the N-terminal domains of the molecules are intramolecular chaperones that prevent premature oligomerization, as well as sharing structural homology with proteins involved in eukaryotic actin rearrangement. Crystal packing has allowed us to construct a model for the tip complex that is supported by mutations designed using the structure. #1: Journal: Acta Crystallogr.,Sect.F / Year: 2006 Title: Expression, Limited Proteolysis and Preliminary Crystallographic Analysis of Ipad, a Component of the Shigella Flexneri Type III Secretion System Authors: Johnson, S. / Roversi, P. / Espina, M. / Deane, J.E. / Birket, S. / Picking, W.D. / Blocker, A. / Picking, W.L. / Lea, S.M. | ||||||
History |
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Structure visualization
Structure viewer | Molecule: ![]() ![]() |
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Downloads & links
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Download
PDBx/mmCIF format | ![]() | 119.2 KB | Display | ![]() |
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PDB format | ![]() | 93.4 KB | Display | ![]() |
PDBx/mmJSON format | ![]() | Tree view | ![]() | |
Others | ![]() |
-Validation report
Summary document | ![]() | 456.6 KB | Display | ![]() |
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Full document | ![]() | 493.9 KB | Display | |
Data in XML | ![]() | 25.7 KB | Display | |
Data in CIF | ![]() | 33.6 KB | Display | |
Arichive directory | ![]() ![]() | HTTPS FTP |
-Related structure data
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Links
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Assembly
Deposited unit | ![]()
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1 | ![]()
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2 | ![]()
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Unit cell |
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Noncrystallographic symmetry (NCS) | NCS oper: (Code: given Matrix: (-1, -0.00234, 0.0002), Vector: |
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Components
#1: Protein | Mass: 35248.234 Da / Num. of mol.: 2 / Fragment: RESIDUES 15-332 Source method: isolated from a genetically manipulated source Source: (gene. exp.) ![]() Plasmid: PET-15B / Production host: ![]() ![]() #2: Chemical | ChemComp-GOL / | #3: Water | ChemComp-HOH / | Sequence details | THIS IS THE N102H VARIANT (FROM PLASMID PMYSH6000 AND PLASMID PCP301). THE HIS IN THE SEQUENCE IS A ...THIS IS THE N102H VARIANT (FROM PLASMID PMYSH6000 AND PLASMID PCP301). THE HIS IN THE SEQUENCE IS A NATURALLY OCCURRING VARIANT | |
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-Experimental details
-Experiment
Experiment | Method: ![]() |
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Sample preparation
Crystal | Density Matthews: 2.48 Å3/Da / Density % sol: 50.48 % |
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Crystal grow | pH: 8.5 Details: 25-28 % (W/V) PEG 4000, 0.1 M TRIS-HCL, PH 8.5, 0.2 M MGCL2 |
-Data collection
Diffraction | Mean temperature: 100 K |
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Diffraction source | Source: ![]() ![]() ![]() |
Detector | Type: MARRESEARCH / Detector: CCD / Date: Dec 4, 2004 |
Radiation | Protocol: SINGLE WAVELENGTH / Monochromatic (M) / Laue (L): M / Scattering type: x-ray |
Radiation wavelength | Wavelength: 0.931 Å / Relative weight: 1 |
Reflection | Resolution: 2.7→75 Å / Num. obs: 14594 / % possible obs: 90.1 % / Observed criterion σ(I): 0 / Redundancy: 7 % / Biso Wilson estimate: 8 Å2 / Rmerge(I) obs: 0.14 / Net I/σ(I): 3.9 |
Reflection shell | Resolution: 2.7→2.8 Å / Redundancy: 3 % / Rmerge(I) obs: 0.48 / Mean I/σ(I) obs: 1.6 / % possible all: 68.2 |
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Processing
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Refinement | Method to determine structure: ![]()
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Solvent computation | Solvent model: BABINET SCALING / Bsol: 145 Å2 / ksol: 0.33 e/Å3 | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
Refinement step | Cycle: LAST / Resolution: 3→20 Å
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Refine LS restraints |
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